Air conditioning system and evaporator thereof

Abstract

The application discloses an evaporator of an air conditioning system, comprising a first throttling device and an evaporation channel, and further comprising: a supercooling channel, the supercooling channel, the first throttling device and the evaporation channel are sequentially communicated; a condensate device is used for collecting condensate on the evaporation channel and can supply the collected condensate to the outside of the supercooling channel to be able to absorb heat from the fluid in the supercooling channel. The application sets the supercooling channel before the evaporation channel and correspondingly sets the condensate device at the evaporation channel to be able to collect the condensate, obtain more condensate and guide more condensate to the supercooling channel, so that the cold energy of the condensate outside the evaporation channel can be fully utilized to better realize the supercooling of the supercooling channel, and therefore the application can effectively solve the problem of high energy consumption of the evaporator of the air conditioning system. The application further discloses an air conditioning system comprising the above evaporator.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, more particularly, to an evaporator of an air conditioning system, and to an air conditioning system comprising the evaporator. BACKGROUND

[0002] With the development of society, air conditioners are becoming more and more popular in our lives. Whether at home or on the road, air conditioners are important devices for providing a comfortable environment. As a frequently used device, the consumption of electric energy is also huge under long-time operation. Therefore, high energy efficiency of air conditioners is our constant pursuit.

[0003] Although the existing air conditioning system has higher energy efficiency, it still relies more on high-efficiency compressors. The cold or heat in some systems cannot be effectively utilized, and a lot of cold is wasted with the condensate water.

[0004] In the process of realizing the present application, the inventor found that the evaporator of the air conditioning system has the problem of high energy consumption. SUMMARY

[0005] Therefore, the first object of the present application is to provide an evaporator of an air conditioning system, which can effectively solve the problem of high energy consumption of the evaporator of the air conditioning system. The second object of the present application is to provide an air conditioning system comprising the evaporator.

[0006] In order to achieve the above-mentioned first object, the present application provides the following technical solutions:

[0007] An evaporator of an air conditioning system, comprising a first throttling device and an evaporation channel, further comprising:

[0008] a supercooling channel, the supercooling channel, the first throttling device and the evaporation channel being sequentially communicated;

[0009] a condensate device for collecting condensate on the evaporation channel and capable of supplying the collected condensate to the outside of the supercooling channel to be able to absorb heat from the fluid in the supercooling channel.

[0010] The evaporator of the air conditioning system is provided with a supercooling passage before the evaporation passage and a condensate device corresponding to the evaporation passage, so as to collect condensate, obtain more condensate, and guide more condensate to the supercooling passage, so that the cold energy of the condensate outside the evaporation passage can be fully utilized, and the supercooling of the supercooling passage can be better achieved. Therefore, the evaporator of the air conditioning system can more fully utilize the cold energy of the condensate, so that the evaporator of the air conditioning system has lower energy consumption. In summary, the evaporator of the air conditioning system can effectively solve the problem of high energy consumption of the evaporator of the air conditioning system.

[0011] In some embodiments, the condensate device comprises a liquid receiving disc and a heat exchange passage, the heat exchange passage and the supercooling passage can exchange heat with each other; the heat exchange passage can introduce fluid from the liquid receiving disc.

[0012] In some embodiments, a second throttling device is arranged between the liquid outlet of the liquid receiving disc and the heat exchange passage.

[0013] In some embodiments, a booster pump is arranged between the liquid receiving disc and the heat exchange passage.

[0014] In some embodiments, a booster pump is arranged between the liquid receiving disc and the second throttling device to drive the flow of condensate.

[0015] In some embodiments, a filter device is arranged between the liquid receiving disc and the second throttling device, and a filter screen is arranged at the water outlet of the liquid receiving disc, the filter aperture of the filter screen is larger than the filter aperture of the filter device.

[0016] In some embodiments, a vacuum pump is further included, and the heat exchange passage is communicated between the vacuum pump and the liquid receiving disc.

[0017] In some embodiments, an array tube body is further included, and in the array tube body: the tube cavity of a part of the tube body is the evaporation passage, the tube cavity of a part of the tube body is the supercooling passage, and the tube cavity of a part of the tube body is the heat exchange passage.

[0018] In some embodiments, the tube body forming the supercooling passage and the tube body forming the heat exchange passage are edge position tube bodies of the array tube body.

[0019] In some embodiments, in the upward direction, the tube cavity of the first row of tube bodies in the array tube body is the heat exchange passage, and the tube cavity of the second row of tube bodies is the supercooling passage.

[0020] In some embodiments, in the upward direction, the tube cavity of the first row of tube bodies in the array tube body is the supercooling passage, and the tube cavity of the second row of tube bodies is the heat exchange passage.

[0021] To achieve the above-mentioned second object, the application further provides an air conditioning system comprising any of the above-mentioned evaporators, further comprising a condenser and a compressor, wherein the inlet of the supercooling passage of the evaporator in the refrigeration working condition is communicated with the outlet of the condenser in the refrigeration working condition, and the outlet of the evaporation passage of the evaporator in the refrigeration working condition is communicated with the inlet of the compressor in the refrigeration working condition. Since the above-mentioned evaporator has the above-mentioned technical effects, the air conditioning system with the evaporator should also have corresponding technical effects. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0023] Figure 1 The structure schematic diagram of the evaporator provided by the embodiment of the present application is shown in the figure.

[0024] Figure 2 The structure schematic diagram of the air conditioning system provided by the embodiment of the present application is shown in the figure.

[0025] Figure 3 The pressure-enthalpy diagram of the refrigerant with the supercooling passage provided by the embodiment of the present application is shown in the figure.

[0026] Figure 4 The pressure-enthalpy diagram of the condensate water provided by the embodiment of the present application is shown in the figure.

[0027] The marks in the figures are as follows:

[0028] Evaporation passage 1, first throttling device 2, supercooling passage 3, condensate device 4, fan 5, condenser 6, compressor 7, four-way reversing valve 8.

[0029] First array tube body 11, second array tube body 12, first row tube body 13, second row tube body 14.

[0030] Liquid receiving disc 41, heat exchange passage 42, filtering device 43, filter screen 44, booster pump 45, second throttling device 46, vacuum pump 47. DETAILED DESCRIPTION

[0031] The evaporator of the air conditioning system disclosed by the embodiment of the present application can effectively solve the problem of high energy consumption of the evaporator of the air conditioning system.

[0032] Clearly and completely, the technical solutions in the embodiments of the present application will be described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0033] Please refer to Figures 1-4 ; Figure 1 The structural schematic diagram of the evaporator provided in the embodiments of the present application is shown in the following figure; Figure 2 The structural schematic diagram of the air conditioning system provided in the embodiments of the present application is shown in the following figure; Figure 3 The pressure-enthalpy diagram of the refrigerant increasing supercooling passage provided in the embodiments of the present application is shown in the following figure; Figure 4 The pressure-enthalpy diagram of the condensate water provided in the embodiments of the present application is shown in the following figure.

[0034] In some embodiments, in order to improve the energy efficiency target and considering energy waste, the condensate water generated in the air conditioning refrigeration process will cause cold energy waste, therefore, the present application considers that the cold energy in the condensate water is returned to the refrigeration system in the form of supercooling of the refrigerant.

[0035] In some embodiments, the evaporator of the air conditioning system provided comprises a first throttling device 2, an evaporation passage 1, a supercooling passage 3 and a condensate device 4.

[0036] The outlet of the first throttling device 2 is in communication with the inlet of the evaporation passage 1, and the outlet of the supercooling passage 3 is in communication with the inlet of the throttling device. It should be noted that in the context, the communication can be direct communication or indirect communication, and the specific communication mode can be set as required. In the above communication relationship, the supercooling passage 3, the first throttling device 2 and the evaporation passage 1 are in communication in sequence, the refrigerant is cooled after entering the supercooling passage 3 from the condenser 6, further releases heat, and then enters the first throttling device 2 after being cooled, and then enters the evaporation passage 1 after being throttled by the first throttling device 2, and absorbs heat to evaporate.

[0037] The condensate device 4 is used to collect the condensate on the evaporation passage 1, and can supply the collected condensate to the outside of the supercooling passage 3 to be able to absorb heat from the fluid in the supercooling passage 3. The condensate is collected to better gather the condensate and better utilize the cold energy of the condensate. The specific collection method, such as a liquid receiving disc 41, a liquid scraping device, a liquid guiding device, etc. For example, the lower side of the pipe body forming the evaporation passage 1 is provided with a liquid guiding device, such as a liquid guiding structure, which realizes liquid guiding by using gravity and tension.

[0038] The collected condensate, due to its low temperature, is supplied to the supercooling passage 3 to absorb heat, of course, the condensate can also be further cooled by other means to achieve better supercooling effect.

[0039] In the evaporator of the air conditioning system, the supercooling passage 3 is arranged before the evaporation passage 1, and the condensate device 4 is arranged at the evaporation passage 1 to collect the condensate, obtain more condensate, and guide more condensate to the supercooling passage 3, so that the cold energy of the condensate outside the evaporation passage 1 can be fully utilized, and the supercooling of the supercooling passage 3 can be better achieved. Therefore, the evaporator of the air conditioning system can more fully utilize the cold energy of the condensate, so that the evaporator of the air conditioning system has lower energy consumption. In summary, the evaporator of the air conditioning system can effectively solve the problem of high energy consumption of the air conditioning system.

[0040] In some embodiments, the condensate device 4 includes an accumulation container to accumulate a certain amount of condensate. Through the accumulated condensate, on the one hand, more cold energy can be accumulated, and on the other hand, it is more convenient to use, such as uniform provision to the supercooling passage 3.

[0041] In some embodiments, the condensate device 4 can adopt a liquid receiving disc 41 which has a certain extension in the horizontal direction to more fully receive the condensed liquid outside the evaporation passage 1.

[0042] Further, the liquid receiving disc 41 can serve as the above-mentioned accumulation container to have a certain liquid storage capacity. Of course, the liquid storage volume can be related to the humidity of the local air. The greater the local humidity, the faster the condensate generated by the air conditioner. Of course, the liquid storage capacity of the liquid receiving disc 41 is also related to the power of the subsequent booster pump 45, and also related to the cold energy required by the supercooling passage 3. The liquid receiving disc 41 integrates the accumulation function, which can greatly reduce the cost and the occupied volume compared with separately arranging an accumulation container.

[0043] In some embodiments, the condensate device 4 can supply the condensed water to the outside of the supercooling passage 3 by pumping, spraying on the outside of the supercooling passage 3. It can also be that the supercooling passage 3 passes through the condensate in the accumulation container to directly contact, such as passing through the accumulation container, and like passing through the liquid receiving disc 41. Of course, other supply modes can also be adopted.

[0044] In some embodiments, the condensate device 4 preferably includes a heat exchange passage 42, and the above-mentioned accumulation container or liquid receiving disc 41 supplies fluid to the heat exchange passage 42. That is, the heat exchange passage 42 can introduce fluid from the liquid receiving disc 41, and the introduction mode can be through the booster pump 45, or through gravity, which can be set according to the needs.

[0045] And the heat exchange passage 42 and the supercooling passage 3 can exchange heat with each other, such as using a heat exchanger, which can be a plate heat exchanger or a tube heat exchanger. The two passages that can exchange heat with each other and are separated can be the heat exchange passage 42 and the supercooling passage 3, respectively.

[0046] Of course, more than two pipe bodies can also be provided, wherein there are a first pipe body and a second pipe body, wherein the pipe cavity of the first pipe body is the heat exchange channel 42, and the pipe cavity of the second pipe body is the supercooling channel 3, and the first pipe body and the second pipe body are in close or direct heat conduction contact, so as to be in heat conduction with each other. When a plurality of first pipe bodies and / or a plurality of second pipe bodies are provided, the first pipe bodies and the second pipe bodies can be arranged in a cross manner, so as to fully exchange heat. The first pipe bodies and the second pipe bodies can be arranged in parallel, or can be arranged in a winding manner.

[0047] In some embodiments, the condensate device 4 can further comprise a second throttling device 46, which is used to supply the condensate to the supercooling channel 3 after throttling and pressure reduction. After throttling and pressure reduction, on the one hand, the temperature can be reduced, and on the other hand, the condensate can provide a large amount of cold (for example, the refrigeration capacity per unit volume is 10 times that of the refrigerant per unit volume) after being throttled, so that the refrigerant in the supercooling channel 3 can be further cooled. Figure 4

[0048] The second throttling device 46 supplies the supercooling channel 3, which can utilize the evaporation cavity. Specifically, the heat exchange channel 42 described above, i.e., the outlet of the second throttling device 46 is in communication with the inlet of the supercooling channel 3.

[0049] In some embodiments, when the liquid collecting disc 41 is provided, the liquid outlet of the liquid collecting disc 41 can be directly or indirectly communicated with the inlet of the second throttling device 46. For example, the second throttling device 46 can be arranged between the liquid outlet of the liquid collecting disc 41 and the heat exchange channel 42.

[0050] In some embodiments, the liquid in the accumulation container or the liquid collecting disc 41 described above can be supplied to the heat exchange channel 42 by gravity. However, it is considered that in actual application, the accumulation container or the liquid collecting disc 41 is generally arranged at a lower position, and if the heat exchange channel 42 is arranged at a lower position, the size in the up-down direction will be larger. Based on this, the booster pump 45 can be arranged to pump the condensate to the supercooling channel, for example, the booster pump 45 is arranged between the liquid collecting disc 41 and the second throttling device 46, so as to drive the flow of the condensate.

[0051] Of course, in order to facilitate manufacturing or better utilize the condensate, etc., it is also necessary to arrange the supercooling channel 3 upward, i.e., on the upper side of the liquid collecting disc 41, at this time, the corresponding supercooling channel 3 also needs to be arranged on the upper side of the liquid collecting disc 41. Based on these needs, the booster pump 45 described above can also be arranged. Therefore, when the second throttling device 46 is not arranged, the booster pump can be arranged between the liquid collecting disc 41 and the heat exchange channel 42.

[0052] ​In some embodiments, since the condensed water condenses on the outside of the evaporation channel 1, and the outside of the evaporation channel 1 is generally passed by fresh air, it is difficult to avoid the mixing of particles in the condensed water. In addition, when the above-mentioned liquid receiving disc 41 is provided, the liquid receiving disc 41 is open, and impurities are easily fallen into, which affects heat exchange. Based on this, the filter device 43 can be provided between the liquid receiving disc 41 and the second throttling device 46 to filter out particles of unsuitable particle size and other impurities of larger volume. Of course, the purpose of filtering also needs to consider the type of impurities allowed by the booster pump 45, which is filtered through the filter device 43, so that the booster pump 45 can operate better. At this time, the filter device 43 is specifically provided between the booster pump 45 and the liquid receiving disc 41, or the filter device 43 can be provided between the booster pump 45 and the second throttling device 46 without considering the booster pump 45. Of course, the purpose of filtering can consider the filtering needs of the second throttling device 46 to ensure the throttling of the second throttling device 46. Even the filtering effect of the filter device 43 can also take into account the needs of the heat exchange channel 42 and / or the vacuum pump 47 (mentioned later).

[0053] In some embodiments, the water outlet of the liquid receiving disc 41 can be provided with a filter screen 44, and the filter aperture of the filter screen 44 is larger than the filter aperture of the filter device 43, so that the filter screen 44 filters impurities with larger particles to protect the booster pump 45, and the filter device 43 further filters to mainly protect the second throttling device 46.

[0054] In some embodiments, the vacuum pump 47 is further included, and the heat exchange channel 42 is communicated between the vacuum pump 47 and the liquid receiving disc 41, that is, under the action of the vacuum pump 47, the heat exchange channel 42 can be better kept in a low pressure state to ensure that the heat exchange channel 42 is better maintained at a set evaporation temperature to absorb more heat. Especially when the vacuum pump 47 and the second throttling device 46 are used together, the low pressure maintaining effect is better. Therefore, in a specific scheme, the liquid receiving disc 41, the second throttling device 46, the heat exchange channel 42 and the vacuum pump 47 can be sequentially arranged. Further, the booster pump 45 can be further used in cooperation, and the liquid receiving disc 41, the booster pump 45, the second throttling device 46, the heat exchange channel 42 and the vacuum pump 47 can be sequentially arranged.

[0055] In some embodiments, in actual application, the evaporation coil is generally provided, and the lumen of the evaporation coil is used as the evaporation channel 1, which is a relatively mature technology at present. The supercooling channel 3 and the heat exchange channel 42 can be separately provided with a pipe body, or even can be simultaneously provided with the above-mentioned two channels in one block, that is, the above-mentioned supercooling channel 3 and the heat exchange channel 42.

[0056] In order to effectively control the cost and arrange conveniently, the array tube body can be provided, in which: a part of the tube cavity of the tube body is the evaporation passage 1, a part of the tube cavity of the tube body is the supercooling passage 3, and a part of the tube cavity of the tube body is the heat exchange passage 42.

[0057] For the tube body with the tube cavity as the evaporation passage 1, when a plurality of corresponding tube bodies are provided, the corresponding tube bodies can be connected in parallel and / or in series, and in particular, the arrangement can be made as required.

[0058] For the tube body with the tube cavity as the supercooling passage 3, when a plurality of corresponding tube bodies are provided, the corresponding tube bodies can be connected in parallel and / or in series, and in particular, the arrangement can be made as required.

[0059] For the tube body with the tube cavity as the heat exchange passage 42, when a plurality of corresponding tube bodies are provided, the corresponding tube bodies can be connected in parallel and / or in series, and in particular, the arrangement can be made as required.

[0060] The array tube body refers to the array arrangement of a plurality of tube bodies, that is, the array manner, and the array manner is not limited and can be a square array or a circular array. For the square array, the tube bodies can be arranged in alignment or staggered, as shown in the drawings. From top to bottom, the positions of the adjacent two rows of tube bodies are arranged staggered, and the tube bodies therebetween are arranged in alignment. For example, the tube bodies in the first, third, fifth, and so on rows are arranged in alignment, and the tube bodies in the second, fourth, sixth, and so on rows are arranged in alignment. The first row of tube bodies 13 and the second row of tube bodies 14, as well as any two adjacent rows of tube bodies, are arranged staggered in the row direction, and are generally uniformly staggered. For example, the tube body in the second row is arranged at the intermediate position between the two adjacent tube bodies in the first row.

[0061] It should be further noted that the array tube body is preferably arranged in the standard array manner. However, the purpose of the array is to have a better ventilation gap, and therefore some distances or shapes are changed locally for the purpose of avoiding obstacles and the like, which is also recognized.

[0062] In some embodiments, part or all of the tube bodies forming the supercooling passage 3, the tube bodies forming the heat exchange passage 42, and the tube bodies forming the evaporation passage 1 can be arranged in parallel, without necessarily being arranged in an array.

[0063] In some embodiments, the evaporator can be provided with one or more array tube bodies, such as the first array tube body 11 and the second array tube body 12, and each array tube body shares one first throttling device 2 or corresponds to different first throttling devices 2. When a plurality of array tube bodies share one throttling device, part of the array tube bodies can be provided with the supercooling passage 3 and / or the heat exchange passage 42, which is more convenient in the connection relationship than when each array tube body is provided with the evaporation passage 1, the heat exchange passage 42, and the supercooling passage 3, and is more conducive to modularization.

[0064] The first array tube body 11 and the second array tube body 12 are respectively provided with the first throttling device 2, so that some of the array tube bodies are provided with the supercooling channel 3 and / or the heat exchange channel 42.

[0065] As shown in the drawings, the first array tube body 11 and the second array tube body 12 can be provided with the evaporation channel 1, the heat exchange channel 42 and the supercooling channel 3. The supercooling channel 3 in the first array tube body 11 and the supercooling channel 3 in the second array tube body 12 can be arranged in series, and preferably in parallel, that is, the liquid from the condenser 6 is divided into two streams, one of which flows to the supercooling channel 3 in the first array tube body 11 and the other of which flows to the supercooling channel 3 in the second array tube body 12, and then flows through the supercooling channels 3 of each other, respectively, and then flows to the corresponding second throttling device 46, and then flows to the evaporation channel 1, and then flows to the compressor 7.

[0066] The heat exchange channel 42 in the first array tube body 11 and the heat exchange channel 42 in the second array tube body 12 can be arranged in parallel, and preferably in series as shown in the drawings, so as to better ensure the low pressure state inside.

[0067] In some embodiments, the tube body forming the supercooling channel 3 and the tube body forming the heat exchange channel 42 are edge position tube bodies of the array tube body, so that the supercooling channel 3 can absorb more heat from the heat exchange channel 42, and thus the arrangement of the supercooling channel 3 and the heat exchange channel 42 at the edge position is more conducive to heat exchange between the two.

[0068] In actual application, the tube body forming the supercooling channel 3 can be located on the side of the tube body forming the heat exchange channel 42 away from the evaporation channel 1. Of course, the tube body forming the supercooling channel 3 and the tube body forming the heat exchange channel 42 can also be arranged in cross to mix together.

[0069] In some embodiments, when the fan 5 is provided, in the direction perpendicular to the blowing direction of the fan 5, the tube body forming the supercooling channel 3 and the tube body forming the heat exchange channel 42 can be edge position tube bodies of the array tube body.

[0070] In some embodiments, when the tube bodies are arranged horizontally, in the upward direction, the lumen of the first row of tube bodies 13 in the array tube body is the heat exchange channel 42, and the lumen of the second row of tube bodies 14 is the supercooling channel 3. The tube bodies forming the evaporation channel 1, the tube bodies forming the supercooling channel 3 and the tube bodies forming the heat exchange channel 42 are arranged in order from top to bottom, so that the condensed water first falls on the outside of the tube body forming the supercooling channel 3, so that the condensed water can be directly used for evaporation and heat absorption.

[0071] In some embodiments, as described above, the tube cavity of the first row of tubes 13 in the array tube body can be the supercooling passage 3, and the tube cavity of the second row of tubes 14 can be the heat exchange passage 42 in the upward direction.

[0072] In some embodiments, the supercooling passage 3 and the heat exchange passage 42 can be arranged at the bottommost row of the array tube body as much as possible, because the air volume at this position is small, and the heat exchange effect is generally poor if used as an evaporation passage, and the backflow effect is generally poor. If used as supercooling, this problem does not need to be worried about.

[0073] In some embodiments, the cold energy recovery using condensed water can use auxiliary equipment. This easily leads to an increase in initial cost investment, and also makes the entire air conditioning system occupy a larger space due to the increase in the number of introduced devices.

[0074] Therefore, by using the bottommost row of tubes of the evaporator as supercooling tubes (the tube cavity forms the supercooling passage 3) and heat exchange tubes (the tube cavity forms the heat exchange passage 42), and the rest as evaporation tubes (the tube cavity forms the evaporation passage 1), the condensed water generated on the outer wall of the evaporation tube of the evaporator is pressurized by the booster pump (the booster pump 45 described above) and throttled by the second throttling device 46, and the condensed water of the heat exchange tube becomes low-temperature and low-pressure evaporates and absorbs heat, which is used to supercool the high-pressure refrigerant liquid that is not throttled, the unit refrigeration capacity of the refrigerant liquid after supercooling is significantly improved, the amount of refrigerant is reduced, and the power of the compressor 7 is reduced, so that the power of the compressor 7 is reduced, the overall refrigeration capacity is improved, and the energy efficiency value of the air conditioning system is improved.

[0075] For the evaporator applied to an integrated heat pump air conditioning system, in humid areas or humid seasons, the evaporator is prone to generate condensed water. If not handled in time, one will affect the air volume attenuation of the evaporator, and on the other hand, the condensed water is likely to be blown out with the fan 5, which can cause pollution due to water splashing on the indoor side. The bottommost row of tubes of the evaporator coil is changed to a heat exchange tube, which is used to supercool the unthrottled refrigerant. One side of the water collecting tray (one of the liquid collecting trays 41 described above) is designed with a water collecting groove, and the water outlet of the water collecting groove is provided with a filter screen 44 for rough filtering of the condensed water before entering the sleeve supercooling tube. The condensed water first passes through a filter (fine filtering to prevent clogging of the throttling device) (one of the filtering devices 43 described above) before entering the supercooling tube, and the condensed water becomes low-temperature and high-pressure condensed water under the action of the booster water pump, and is throttled by the throttling device before evaporating and absorbing heat in the supercooling tube.

[0076] According to the drawings Figure 2 As shown in the drawings, our supercooling passage 3 is located after the condensation and before the throttling of the air conditioning system. According to the drawings Figure 3The pressure-enthalpy diagram shows that the pressure-enthalpy diagram before subcooling is: ①→1a→②→③→④→4a→5a→①; while the pressure-enthalpy diagram of the refrigeration system after subcooling is: ①→1a→②→③→④→4b→5b→①. The unit refrigeration capacity of the refrigerant before subcooling is: Q1=h1-h 5a ( Figure 3 (The unit refrigeration capacity at point 1 minus the refrigeration capacity at point 5a); the unit refrigeration capacity of the refrigerant after subcooling is: Q2 = h1 - h 5b ( Figure 3 (Subtracting the cooling capacity at point 5b from the unit cooling capacity at point 1) Since the theoretical power per unit remains unchanged before and after subcooling, the energy efficiency of the air conditioning system is improved. After adding subcooling aisle 3 to the air conditioning system, the amount of refrigerant is reduced, so the power consumption of compressor 7 in the air conditioning system is reduced. However, due to the addition of the subcooling pipe, the unit cooling capacity of the air conditioning system is greatly improved. (See attached...) Figure 4 As shown, the cooling capacity per unit volume of condensate is particularly large. The cooling capacity of the same volume of condensate is about 20 times that of the same volume of refrigerant. In addition, the condensate also has an evaporation function in the subcooling pipe. Therefore, the cooling capacity of the evaporator coil is definitely higher than that of the original solution, while the power consumption is reduced. Therefore, the air conditioning energy efficiency system of the present invention is definitely improved.

[0077] From the appendix Figure 2 It can be seen that the cooling source of the subcooling tube is the condensate formed in the evaporator. The evaporator is designed with a water receiving groove, which is equipped with an impurity filter screen 44. The condensate collected in the water receiving groove is first filtered by the impurity filter screen 44, and then pressurized by the booster pump 45 under low temperature and normal pressure. Before entering the subcooling tube, it will pass through a second throttling device 46, which will change the low temperature and normal pressure condensate into low temperature and low pressure water.

[0078] On the side furthest from fan 5, the odd-numbered pipes carry condensate, while the even-numbered pipes carry the refrigerant liquid being cooled. The water's role is evaporation and heat absorption; the refrigerant, being subcooled, releases heat and is thus subcooled. After absorbing heat, the water in the subcooling pipes becomes low-temperature, low-pressure water vapor. A vacuum pump 47 is located on one side of the subcooling pipes and will continuously operate as long as there is condensate in the subcooling pipes. The water vapor, under the action of the vacuum pump 47, maintains the low pressure of the subcooling pipes (see attached diagram). Figure 4 As shown in the pressure-enthalpy diagram, the evaporation pressure of water at around 10°C is very low. In an air conditioning unit adjacent to the condenser 6 and the evaporator, the low-temperature water vapor discharged by the vacuum pump 47 can be discharged to the coil position of the condenser 6.

[0079] Based on the evaporator provided in the above embodiments, the application further provides an air conditioning system, which comprises the evaporator provided in any of the above embodiments, a condenser 6 and a compressor 7, the inlet of the supercooling passage 3 of the evaporator in refrigeration working condition is communicated with the outlet of the condenser 6 in refrigeration working condition, and the outlet of the evaporation passage 1 of the evaporator in refrigeration working condition is communicated with the inlet of the compressor 7 in refrigeration working condition. Since the air conditioning system adopts the evaporator provided in the above embodiments, the beneficial effects of the air conditioning system refer to the above embodiments.

[0080] In some embodiments, the main system, the inlet and the outlet in the above air conditioning system can be understood as the inlet and the outlet in refrigeration working condition.

[0081] When the air conditioning system needs to heat, a four-way reversing valve 8 can be further provided, when refrigerating, the inlet of the compressor 7 is communicated with the corresponding interface of the evaporator to obtain the fluid in the evaporator. When heating, the outlet of the compressor 7 is communicated with the corresponding interface of the evaporator to make the compressed high-pressure high-temperature fluid enter the evaporator.

[0082] The embodiments in the specification are described in a progressive way, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the embodiments can be understood by referring to each other.

[0083] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the application. Various modifications to the embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An evaporator of an air conditioning system comprising a first throttling device (2) and an evaporation channel (1), characterized in that, Further comprising: a supercooling passage (3), the supercooling passage (3), the first throttling device (2) and the evaporation passage (1) are communicated in sequence; a condensate device (4) for collecting condensate on the evaporation passage (1) and capable of supplying the collected condensate to the outside of the supercooling passage (3) to be able to absorb heat from the fluid in the supercooling passage (3).

2. The evaporator of the air conditioning system according to claim 1, wherein The condensate device (4) comprises a liquid receiving tray (41) and a heat exchange passage (42), the heat exchange passage (42) and the supercooling passage (3) can exchange heat with each other; the heat exchange passage (42) can introduce fluid from the liquid receiving tray (41).

3. The evaporator of the air conditioning system according to claim 2, wherein A second throttling device (46) is arranged between the liquid outlet of the liquid receiving tray (41) and the heat exchange passage (42).

4. The evaporator of the air conditioning system according to claim 3, wherein A booster pump is arranged between the liquid receiving tray (41) and the heat exchange passage (42).

5. The evaporator of the air conditioning system according to claim 3, wherein A booster pump (45) is arranged between the liquid receiving tray (41) and the second throttling device (46).

6. The evaporator of the air conditioning system according to claim 5, wherein A filter device (43) is arranged between the liquid receiving tray (41) and the second throttling device (46), and a filter screen (44) is arranged at the water outlet of the liquid receiving tray (41), the filter aperture of the filter screen (44) is larger than the filter aperture of the filter device (43).

7. The evaporator of the air conditioning system according to claim 2, wherein Further comprising a vacuum pump (47), the heat exchange passage (42) is communicated between the vacuum pump (47) and the liquid receiving tray (41).

8. The evaporator of the air conditioning system according to any one of claims 2 to 7, characterized in that, Further comprising an array tube body, in the array tube body: the lumen of a part of the tube body is the evaporation passage (1), the lumen of a part of the tube body is the supercooling passage (3), and the lumen of a part of the tube body is the heat exchange passage (42).

9. The evaporator of the air conditioning system according to claim 8, wherein The tube body forming the supercooling passage (3) and the tube body forming the heat exchange passage (42) are edge position tube bodies of the array tube body.

10. The evaporator of the air conditioning system according to claim 8, wherein In the upward direction, the lumen of the first row of tube bodies (13) in the array tube body is the heat exchange passage (42), and the lumen of the second row of tube bodies (14) is the supercooling passage (3).

11. The evaporator of the air conditioning system of claim 8, wherein, In the upward direction, the lumen of the first row of tube bodies (13) in the array tube body is the supercooling passage (3), and the lumen of the second row of tube bodies (14) is the heat exchange passage (42).

12. An air conditioning system comprising a condenser (6) and a compressor (7), characterized in that, Further comprising the evaporator of any one of claims 1-11, the inlet of the supercooling passage (3) of the evaporator in refrigeration working condition is communicated with the outlet of the condenser (6) in refrigeration working condition, and the outlet of the evaporation passage of the evaporator in refrigeration working condition is communicated with the inlet of the compressor (7) in refrigeration working condition.

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